The Ricoh DB-100 Li-Ion Rechargeable Battery is compatible with Ricoh's CX5, CX4, and CX3 cameras. The BJ-10 battery charger is required to charge the long-lasting battery, and charging takes about 3 hours. Depending on the camera model, conditions, and operating style (for instance, depending on the shot frequency and whether or not you have LCD Auto Dim on or off), you can take about 260-330 pictures on a single charge.